My child has to use counters to find 1/3, then write the nuber sentence. What is a number sentence?

Answer 1

A number sentence is simply a complete mathematical thought expressed with numbers.

4+2=6 is a complete number sentence because if you wrote it in words, it would make a complete sentence: Four plus two is equal to six.

In the case of fractions, the number sentence would look like this (let's assume your student is using 15 counters):

1/3 of 15 = 5

Answer 2

A number sentence is when people use numbers in a sentence. Here is an example:

there are 19 flowers in the garden. Lindsey picked 5. How many flowers are left?
This is a number sentence.

Answer 3

One-third (1/3) of 3 equals 1.